x86/tools: Rename distill.awk to objdump_reformat.awk
Rename distill.awk to objdump_reformat.awk because it more
clearly expresses its purpose of re-formatting the output
of objdump so that insn_decoder_test can read it.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/151153625409.22827.10470603625519700259.stgit@devbox
Signed-off-by: Ingo Molnar <mingo@kernel.org>
diff --git a/arch/x86/tools/objdump_reformat.awk b/arch/x86/tools/objdump_reformat.awk
new file mode 100644
index 0000000..f418c91
--- /dev/null
+++ b/arch/x86/tools/objdump_reformat.awk
@@ -0,0 +1,48 @@
+#!/bin/awk -f
+# SPDX-License-Identifier: GPL-2.0
+# Usage: objdump -d a.out | awk -f objdump_reformat.awk | ./insn_decoder_test
+# Reformats the disassembly as follows:
+# - Removes all lines except the disassembled instructions.
+# - For instructions that exceed 1 line (7 bytes), crams all the hex bytes
+# into a single line.
+# - Remove bad(or prefix only) instructions
+
+BEGIN {
+ prev_addr = ""
+ prev_hex = ""
+ prev_mnemonic = ""
+ bad_expr = "(\\(bad\\)|^rex|^.byte|^rep(z|nz)$|^lock$|^es$|^cs$|^ss$|^ds$|^fs$|^gs$|^data(16|32)$|^addr(16|32|64))"
+ fwait_expr = "^9b "
+ fwait_str="9b\tfwait"
+}
+
+/^ *[0-9a-f]+ <[^>]*>:/ {
+ # Symbol entry
+ printf("%s%s\n", $2, $1)
+}
+
+/^ *[0-9a-f]+:/ {
+ if (split($0, field, "\t") < 3) {
+ # This is a continuation of the same insn.
+ prev_hex = prev_hex field[2]
+ } else {
+ # Skip bad instructions
+ if (match(prev_mnemonic, bad_expr))
+ prev_addr = ""
+ # Split fwait from other f* instructions
+ if (match(prev_hex, fwait_expr) && prev_mnemonic != "fwait") {
+ printf "%s\t%s\n", prev_addr, fwait_str
+ sub(fwait_expr, "", prev_hex)
+ }
+ if (prev_addr != "")
+ printf "%s\t%s\t%s\n", prev_addr, prev_hex, prev_mnemonic
+ prev_addr = field[1]
+ prev_hex = field[2]
+ prev_mnemonic = field[3]
+ }
+}
+
+END {
+ if (prev_addr != "")
+ printf "%s\t%s\t%s\n", prev_addr, prev_hex, prev_mnemonic
+}